Hi Timetraveler

I guess no one knows of a source for Arracacha, I have not seen anybody around here growing it. Long time ago I ate it, it was also called white carrot and had many dishes with them but what I remember it was not one of my favorites but maybe my taste buds had changed.:)
Good luck in finding the roots, I am sure they are very nutritious and probably have the same growing conditions as carrots or celery....

Silvia